Automatic projector machine



Dec. 31, 1940. V, RHOKANSON 2,227,259

AUTOMATIC PROJECTOR MACHINE Filed April 18, 1938 5 Sheets-Sheet l PIJl an U Q INVENTOR. V/ CENT 76/10/07 M OK 'I M I Y ATTORNEYS.

Dec. 31, 1940. v. RHOKANSON AUTOMATIC PROJECTOR MACHINE Filed April 18,1938 5 Sheets-Sheet 2 P 45 m 11/ ""142 I I I f A\\ INVENTOR. V/NCf/VT K.Ham/mm.

MW f A RNEYS.

Dec. 31, 1940. v. R. HOKA'NSON AUTOMATIC PROJECTOR MACHINE Filed April18, 1938 s Shets-Sheet s a R 3 NQ R & E

INVENTOR. V/IY E/Yr A. flo/m/vsozv. BY

' ATTORNEYJ- Patented Dec. 31," I940 AUTOMATIC rnorac'rort MACHINEVincent R. Hokanson, Benton Harbor, Mich.

Application April 18, 1938', Serial No. 202,671

14 Claims.

This invention relates to=-an automatic projector machine adapted forreproducing sound or moving pictures or both from a photographic film.

One object of the invention is to produce amachine in which any one of aplurality of filmsstored therein may be preselected by an operator andwill be automatically threaded into the reproducing mechanism andautomatically shown.

Another object of the invention is to produce a machine which may beeasily operated by persons not skilled in the use of movingpicture'apparatus and which is thus adapted for home use or for coincontrolled use in places frequented by the general public.

To this end the invention provides storage means in which may be placeda plurality of I films, together with means for automatically moving aselected film into cooperative relation with a reproducing mechanism,reproducing the same, and returning it to the storage means in itsoriginal condition.

While the invention is sound picture film silent picture films trackonly. v Other objects and features of the invention will be understoodfrom the accompanying drawings and the following description and claims:

Fig. 1 is a sectional view in elevation of a cab inet having theinvention-in one of its preferred formsinstalled therein and showingparticularly the mechanism used for preselecting a film to be shown. Inthis figure cert to show others in detail. Fig. 2 is an enlarged view inelevation and partly in section of the projecting mechanism and filmstorage means. Fig. 3-is a-front elevational view of the same. Fig. 4 isa detailed view in elevation of a clutch mechanism which may be used forstarting the operation of selecting a film. Fig. 5 is a perspective s,it is applicable as well to and to films carrying a sound view of one ofthe elements shown in Fig, 4. Fig

6 is a sectional view on the line 6-6 of Fig. 1. Fig. 7 is a sectionalview on the line 7-1 of Fig. 1. Fig. 8 is a perspective view of one endof a member used in the film selecting mechanism; Fig. 9 is a plan viewof electrical mechanism 'used for initiation of certain operations. Fig.10 is a front view and Fig. 11 is a side view of a film having anattachment thereon for cooperation with the apparatus of Fig. 9. Fig. 12is an 'elevational view of a form of coin control switch which may beused with the invention when coin control is desired. Fig. 13 is adiagram of wiring connections.

particularly adapted for ain parts are removed In the preferred form ofthe invention disclosed in the drawings, b provided a cabinet y way ofillustration; there is having a shelf 2| carrying the projectingmechanism and a second shelf 23 supporting mechanism used in controllingthe I selection of a film.

Beneath the shelves 2| and 23 a third shelf 25 supports amplificationapparatus 26 and a speaker 21 which may be of any well known form forthe translation of electrical impulses into sound. In the front wall ofthe W ./-cabinet there is placed a transparent screen 28 mirrors 30 and3|.

the screen is visible t frame 32. optical sys visual images from erateswith the photographic sound track film and with a photocell in thehousing 36 which receives the images from the optical system 29 of theprojector by reflection from a pair of The image thus received on 0 anobserver.

Projector anism is provided with a securely mounted upon the pair ofbrackets 33 between 20 a pair of parallel guide rods appears in thedrawings. \A is slidably mounted on said ns the usual projector lamp L2.

are mounted on the The lamp Ll cooperates with the tem in the usualmanner to produce the film. The lamp L2 coop-' of the 30 in the usualmanner to produce variable electric currents which may be translatedinto sound amplifier 26 and speaker 21.

Film storage mea s by the 'I'he frame 32 also carries a pair ofhorizontal guide rods 38 and 39 on which there is slidably mounted amagazine frame or carriage 40. The

carriage 40 is provided with ets II at the top thereof, ea

pin 42 which may a. friction flange 44 on its edge.

a plurality of brack- 40 ch 01' which carries a a film reel 43 havingThe carriage 40 support is also provided with lower brackets 45 on whichthere are similarly friction flanges 41. The reels 4 be frictionallyrestrained against mounted film reels 46 having 45 3 and 46 mayundesired rotation by means well known in the moving picture art. Each'of the reels 46 is immediately beneath one of the reels 3 and each ofnormally contains a full roll of ing end of which the upper reels 5ofilm 48, the leadis trained between a pair of rollers 49 carried by theframe I and from there straight downwardly line 50 in Fig. 3 t

as indicated by the broken o a pair of rollers 5| carried The opticalsystem 29 25- upon the bracket 45. The lower end of each film isattached to the corresponding lower reel 56. As many reels of film maybe provided as desired. In the present case, five such reels are shownby way of illustration.

Driving mechanism Power for moving the various parts of the mechanism ispreferably supplied by an electric motor MI which is mounted on asuitable bracket provided on the frame 32 and which drives a worm 53,best seen in Fig. 3. The worm 53 meshes with a worm gear 54 which ismounted upon a sleeve 55. Said sleeve is rotatably mounted upon a camshaft 56 and has secured thereto a clutch member 51 adapted to mate witha sliding clutch member 58 splined to the cam shaft 56. The slidingclutch member 58 is moved into and out of engagement with its matingmember 51 by a lever 59 attached to a solenoid plunger 59 which may bemoved in one direction to engage the clutch by a solenoid SI and in theopposite direction to disengage the same by a solenoid S2. The plunger69 is yieldingly retained in either position by a humped leaf spring 63so that the momentary actuation of either solenoid may place the plungerin the corresponding position and it will remain in that position eventhough the solenoid is deenergized.

The cam shaft 58 carries aseries of cams which control the operation ofvarious parts of the mechanism. The operation of the cam shaft isstarted and stopped by the operation of the cam shaft clutch 5'I58 justdescribed.

The motor MI also operates the projector mechanism. This is accomplishedthrough a sliding clutch member 64 splined to the continuously rotatingsleeve 55 and adapted to engage a clutch member 65 secured to a sleeve88 freely mounted upon the cam shaft 58. The sleeve 88 carries asprocket in turn carrying a Sprocket chain 91 adapted to drive theprojector mechanism to be described hereinafter. The projector clutch64-65 is operated by solenoids S3 and S4 through a plunger 68 and lever69 in the same manner as the cam shaft clutch 5I-58 and is retained ineither position by a leaf spring I9.

The motor MI also supplies power for moving the carriage 49 to bring aselected film into proper position with relation to the projectormechanism. This is accomplished through a chain 12 trained aboutsprockets secured to the continuously rotated sleeve 55 and to aparallel shaft I3 (Fig. 1). The shaft I3 drives a shaft I4 through apair of skew gears II. The shaft I4 terminates within a clutch member I5which is secured to said shaft (Fig. 4) and which mates with a slidingclutch member I6 splined to a shaft H which is journaled in the clutchmember 15 and in brackets I8 and I9 supported by the shelf 23.

The clutch member I8 carries a pin 89 adapted to engage the inclinedsurface 8| of a cam lever 82 (Fig. 5) in the rotation of said clutchmember. The cam lever 82 is piovtally mounted at 83 and engages a stoppin 84. When the clutch members I5--'I6 are engaged and both shafts I4and I1 are rotating, the pin 89 strikes lever 82 and tends to press saidlever against the pin 88. In so doing the pin 89 rides upon the surface8| and withdraws clutch member I9 from member I5 against the action of aspring 95, thus bringing the shaft 11 to rest in the position shown inFig. 4.

With the parts in this position, the momentary actuation of a solenoidS5, whose plunger is pivotally attached to the lower end of cam leverI2, rocks said lever against the actions of the spring 85 and a secondspring 85 until the surface 8| slips past the pin 89, whereupon spring85 presses the clutch members together to start the rotation of ShaftII. At the end of a complete revolution of said shaft, the pin 89 againengages lever 82 to stop said rotation. A single rotation of shaft 11thus results from each momentary actuation of the solenoid S5 and thissingle rotation controls the operation of the selection mechanism now tobe described.

Film selection mechanism The shaft 11 has fixed thereto a gear 81meshing with a gear 88 freely carried by a parallel shaft 89. The gear88 has a friction connection 99 with a collar 99a secured to shaft 89and is pressed against said friction connection by a spring 92. Therotation of shaft 11 therefore rotates shaft 89 through the frictionconnection unless shaft 89 is mechanically held against rotation byother means. In that case, said friction connection may slip, permittingrotation of shaft I1 without movement of shaft 99.

The shaft 89 carries a sprocket 99 (Fig. 3 having a chain 9| connectingthe same to a suitable sprocket mounted on a stub shaft 92 carried bythe stationary frame 32. A second chain 93 is trained about a secondsprocket on said stub shaft and about a sprocket carried by a secondstub shaft 94 also mounted on the frame 32. The sprockets on shaft 92are secured together so movement of chain 9| moves chain 93.

Chain 99 carries an attachment 95 on which there is mounted a roller 96(Fig. 2) slidable in a slotted opening 9'! in an arm 98 extending fromthe film storage carriage 49. By this means, the rotation of shaft 89slides carriage 49 backward and forward on the guide rods 38 to bringthe films successively into the proper position with relation to theoptical system 29 and the photocell housing 36 of the projectionmechanism. The ratios of the several sprockets are such that onecomplete revolution of shaft 89 corresponds to one complete round tripof the carriage 49. There is therefore a definite position of the shaft89 at which each of the films is in register with the projectormechanism.

For preselecting the position at which the shaft 89 will be stopped,there are provided a plurality of push buttons I99 (Fig. 1) equal innumber to the films carried by the storage means. Said buttons aremounted on the cabinet in a position accessible to the operator. Eachpush button is connected to a stem I9I slidable in a suitable frame I92.When one of the push buttons is pressed, the corresponding stem |9I ismoved. into the path of travel of a selector arm I93 whichis splined tothe shaft 89 and is retained by a spring I94 against a member I95 freelymounted on both shafts TI and 89. Said member abuts against a collar I98on shaft 89 and is provided with an arm I91 having a projection I98adapted to be engaged by a roller I99 carried by an arm 9 secured to theshaft I1.

An indexing wheel III (Fig. 6) is fixed on shaft 99 and is provided witha plurality of notches II2 about its periphery engageable by the pointedend of a locking lever II8 plvotally a cam II! on the shaft 11 by meansof which 79 said locking lever may be withdrawn from the wheel III for apredetermined period in each rotation of shaft I1. Each of the notchesH2 in the indexing wheel corresponds to a position of the carriage 40 atwhich one of the films is in registry with the projecting mechanism. Aslong therefore as the locking lever II3 engages one of said notches thecarriage 40 is locked against movement and one of said films is inposition to be shown. In the present instance five reels of film areassumed to be stored in the machine and are indicated by numbers I to 5in Fig. 3. Reels numbers I and 5 are in position to be shown when thecarriage 40 is at the extreme right or left end of its travel. Each ofthe other films may be in position during the movement of the carriage40 either to right or left. For that reason there are provided on thewheel III two notches for each of films 2, 3 and 4 and one notch eachfor films I and 5 as indicated by number in Fig. 6.

Operating cycle--selection mechanism In the operation of the filmselecting mechastopped thereby with the selected film in posi-' tion tobe shown. Continued rotation of shaft 11 causes cam III to permit leverII3 to engage the notch corresponding to the newly selected film and tolock the selecting mechanism in place. Continued rotation of the shaft11 thereafter brings roller I09 into engagement with projection I08 .andpresses the member I05 and arm I03 to the right in Fig. 1. The'outer endof arm I03 is shaped as best shown in Fig. 8 and when moved to the rightpresses the selected stem IOI and push button I back into its orig-1 inposition. When roller I09 has passed projection I03, spring I04 returnsarm I03 and member I to their initial positions. Immediately thereafter,the single rotation of shaft 11 is completed and the selector clutchII-I6 is thrown out by engagement of pin 00 with cam lever 62.

The ratio of gears 01 and 00 and the shape of cam II! are such thatshaft 03 makes slightly more than one revolution during the time thatlever I I3 is free from wheel II I. Arm I03, therefore; maypass'all ofthe stems IN and will be stopped by the first one which is in theselected position. If none of the push buttons have been pressed, thelever II3 engages the. 'wheel I II at a point Just beyond the notch fromwhich it was withdrawn. In that case rotation of shaft 83 continuesuntil said lever engages the next of the notches II2. In this manner,when no selections are made, the films are automatically shown in thesequence indicated by the numerals in Fig. 6.

When more than one of the selector buttons I00 have been pressed, themechanism operates to select for first reproduction the film.corresponding to the first of the selected stems IM to be reached bythe arm I03. For its second operation, the arm I03 moves to the next ofsaid stems and so on. Thus. anynumber of films may be preselected at onetime and will be rea pair of rollers I46 mounted thereon.

produced in the order in which the arm I03 During the movement of themagazine carriage 40, the several films extend vertically between therollers 49 and 5| as indicated at 50 in Fig. 2. The projector housing 35occupies the position shown in that figure, in which there is a clearvertical raceway between the parts carried by said housing and theoptical system 23 and photocell casing 36 carried by the frame 32. Theseveral films may thus pass through this raceway in the movement of thecarriage 40. When the proper film has been placed in position, therotation of cam shaft 56 is started by actuation of solenoid SI.

The first rotation of cam shaft 56 causes a cam I23 to operate upon afollower I24 carried on the lower end of a pitman I25to elevate saidpitman. The pitman I25 is suitably guided in brackets formed on theframe 32 and not shown. Said pitman is pivoted at its upper end to abell .crank leverI26 which is pivotally mounted at I21 on a bracketsecured to the frame 32 and not shown in the drawings. The bell crankI26 has a forked upper end I26 engaging a pin I23 formed on a frame I30which is slidably mounted upon pins I3I carried by the frame 32. Theframe I30 carries a pair of rollers I32. The elevation of the pitman I25by the cam I23 moves the frame I30 to the left in Fig. 2 and brings therollers I 32 into engagement with the film and in so doing drawssuflicient film from the reel 43 to form loops indicated by the brokenlines I33 in Fig. 2.

Simultaneously with the formation of the loops the projector casing ismoved to the right in Fig. 2 by means of a cam I34 carried by the camshaft 56. Said cam has a guideway I35 in which a follower I36 is adaptedto travel. Said follower is in the form of a roller mounted on the sideof a forked pitman I31, the forks of which embrace the shaft 56 andwhich is pivotally connected to the lower end of the lever I33. Thelever I33 is pivoted on the frame 32 at I39 and has a forked upper endI40 engaging a pin I 4| on a bracket I42 formed on the lower face of theprojector housing 35. The guideway I35 is properly shaped to move thehousing 35 to the right and left at the proper point in the rotation ofthe cam shaft 56. v

The projector housing 35 carries a member I43 in which there is mounteda plurality of spring pressed rods I44, each horizontally slidable andeach carrying at its outer end a fork I45 having In the movement of theprojector housing 35 to the right in Fig. 2 the rollers I46 engage thefilm and press the same against drive sprockets I41 which have the usualprojections engaging the perforations on the edges of the film. When themovement of casing 35 is complete, cam I23 permits theframe I30 to bewithdrawn, leaving the loops I33 free in the usual manner. With theapparatus in this condition, the film is'in the proper position forreproduction of moving pictures by means of the projector lamp LI andoptical system 23 and for the generation of electrical impulses whichmay be translated into sound by the exciter lamp L2 and thephotoelectric cell contained in the housing 36.

Cil

I48 (Figs. 2 and 3) carried on arms I49 formed on the stationary frame32. Said shafts are rotated by a vertical shaft I50 by means of wormsI5I and worm gears I52. The shaft I50 is driven by a shaft I53 through apair of bevel gears I54. Shaft I53 carries a sprocket driven by thechain 61 when the projector clutch 6465 is in engagement. The usualmechanism for causing the intermittent movement of the film past theoptical system is also provided but is not shown in the drawings. It ispreferably driven by the shaft I50 by any well known means.

The lowermost of the shafts I48 has an arm I55 journaled thereon whichcarries at its lower end a shaft I56 having mounted thereon a frictionwheel I51 and a pulley I58. The friction wheel and pulley are rotated bya pulley I59 on the shaft I48 through a belt I60. An arm I6I is formedintegrally with the arm I55 and extends downwardly into engagement witha cam I63 on the cam shaft 56. Said cam is shaped to move the arm toleft or right in Fig. 2 to move the friction wheel I51 into and out ofengagement with the reel 46.

Operation of projection mechanism In the position of the mechanism shownin Fig. 2 the frictionwheel I51 is lifted above the path of travel ofthe film reels 46. When the proper reel has been brought to position andthe cam shaft 56 has been started, the cam I63 permits the arm I6I tomove to the left, thus lowering the friction wheel I51 into engagementwith the friction flange 41 of the reel 46 of the selected film. Thismay occur simultaneously with the movement of the projector housingpreviously described and when both movements have been completed the camshaft 56 has completed approximately one-third of a revolution and isbrought to rest by a momentary actuation of the solenoid S2 in what maybe termed its projection position.

Simultaneously with the stopping of the cam shaft 56, solenoid S3 ismomentarily actuated to engage the projector clutch 64-65. The drivesprockets I41 are now rotated to draw the film from the selected reel 43while the corresponding reel 46 is rotated by the friction wheel I51 towind the film thereon. The film is thus passed throughthe projectingmechanism in the usual manner.and the pictures and sound recordedthereon are reproduced.

Rewind mechanism I 61 is connected by a link I13 to the upper end of apitman I14 suitably guided in theframe 32 and having at its lower end afollower I15 engaging a. cam I16 on the cam shaft 56.

Rewinding operation When the showingof the selected film has beencompleted, solenoid S4 is momentarily actuated to throw out theprojector clutch 6465 to stop the projection mechanism. At the same timesolenoid SI is again actuated to start the rotation of the cam shaft 56through its second one-third revolution. During this movement of the camshaft, the projector housing 35 is withdrawn to its Fig. 2 position bythe cam I34 to free the film, the friction wheel I51 is lifted from thereel 46 by cam I63 and the friction wheel I69 is lowered into engagementwith the friction flange of the reel 43 by cam I16. The motor M2 isstarted to rotate the reel 43 to rewind the 'film and at substantiallythe same time the solenoid S2 is actuated to stop the cam shaft at theend of its second one-third revolution in what may be termed the rewindposition.

When the film has been completely rewound, the solenoid SI is againactuated to start the rotation of the cam shaft 56 through its finalone-third revolution, during which the pitman I14 is raised by the camI16 to remove the friction wheel I69 from the reel 43 and the motor M2is stopped. At the end of the complete revolution of the cam shaft 56 itis stopped in its initial or idle position. All parts are now inposition for the initiation of another cycle of operations.

Electrical apparatus for automatic control One form of electricalapparatus and wiring by which the automatic operation of the machine maybe controlled is illustrated in Fig. 13. The individual parts thereofwill first be described in detail.

In Fig. 12 there is shown a magazine switch which may be used when themachine is to be coin controlled. Said switch includes a pair ofresilient contact leaves a mounted on a plate I18 and suitably insulatedtherefrom. A pin I19 mounted on said plate rotatably supports a ratchetwheel I 80 which is normally urged in the counterclockwise direction bya torsion spring I8I having one end anchored to said ratchet wheel andthe other end anchored to said pin. The ratchet wheel is normallyrestrained by an esc'apement lever I82 pivoted to the plate I18 and heldin engagement with the wheel I80 by a tension spring I83. Saidescapement lever has a downwardly extending arm I84 positioned to bestruck by a slide I85 of a well known form of coin receiving device I86each time a coin is placed therein and the slide is pressed home. Eachsuch operation actuates the escapement to permit the ratchet wheel tomove counterclockwise through an angular distance represented by onetooth of the ratchet.

For moving the ratchet wheel in the opposite direction against theaction of spring I8I there is provided a slidably mounted dog I81, thepoint of which may engage the ratchet teeth and which is operated at anyconvenient point in the rotation of cam shaft 56 by a cam I88 on saidshaft operating through a follower I89, bell crank lever I90, link HIand bell crank lever I92. Each such operation rotates the ratchet wheelan angular distance in the clockwise direction corresponding to onetooth of the ratchet wheel. The ratchet whel wfl carries an insulatedpin I93 adapted to; n'gage one of the coutact leaves a to in mg. s Wlllsumce 101' an. one or the rollers 5! is mounted on a fixed pin I94 andthe second is mounted on a floating pin I95 resiliently constrainedtoward the first by tension springs I96 to hold the film I91 between therollers. Each of the rollers is formed of insulation material with anarrow ring I98 of conducting material inset in the surface thereof.Each of said rings is en-' gaged by a contact brush I99 supported on thebracket 45 and insulated therefrom. Near each end of each of the films.I91 there is provided a contact piece 28!) illustrated in Figs. 10 and11.

Said contactpieces in passing between the rollers make a momentaryelectrical connection between the corresponding rings I98. In therollers 5| the rings I98 are offset to one side of the roller and thecontact piece 288 at the starting end of the film is similarly offset.In the rollers 49 the,

and those associated with rollers 5| as switches 0.

Obviously, there is one switch 1) and one switch 0 for each of the reelsin storage. However, in the diagram only once! each is shown, it beingunderstood that all of the switches b are connected in parallel and allof the switches c are similarly connected.

A switch box 2! (Fig.3) is associated with the cam shaft 56 and containsa plurality of cam operated switches at to k, inclusive, shown in Fig.13 and operated by cams 2l8 to 2l8, inclusive, in a predeterminedsequence to be described.

A switch 1 is operated by a cam 2| 8 mounted on the shaft 11.

A switch m (Figs. 2 and 13) is closed by an insulatedpin M8 on thepitman I14 when said pitman is lowered for the rewinding operation andis opened when said pitman is raised at the end of said operation.

A switch n is opened each time the solenoid BI is energized and closedeach time solenoid S2 is energized.

A switch 11 is opened each time solenoid S2 is energized and closed eachtime solenoid BI is energized.

A switch a is opened each time solenoid S8 is energized and closed eachtime solenoid S4 is.

energized.

An electromagnetic relay B, when energized, closes switches r and s andopens a switch t.

Power for the electrical operation is supplied from a pair of powermains 221 and 228 which may be connected to any suitable source ofcurrent and may be provided with the usual overload protection notshown.

Operation of electrical control'apparatus is idle. 'i'ne cam shaft 55 isin its'idle position in which cam 2") has opened switch d and closedswitches e and f. No circuits are complete.

When a coin is received the magazine switch a is closed, completing acircuit to start the motor MI (221, a, 229, MI, 228).

At the same time a circuit for solenoid S5 is completed to trip theselector clutch 15-45 and start the operation of selecting a film (221,a, 229, e, 238, n, 231, S5, 228).

After the movement of carriage 48 is complete but before shaft 11 hascompleted its single revolution, cam 2l6 momentarily closes switch I andcompletes a circuit for therelay R (221, a, 229, e, 230, l, 232, R, 228)Relay R opens switch t with no immediate effect and closes switches rand s.

The closing of switch r completes a holding circuit for relay R to holdit in the energized condition after switch lis opened (221, k, 233, r,232, R, 228) The closing of switch s completes a circuit for solenoidsSi and S4 (221, s, 234, S4 and SI, 228). The projector clutch is alreadydisconnected so the energizing of solenoid S4 has no effect. Theenergizing of solenoid SI starts the rotation of cam shaft 56 and alsoopens switch 11. to deenergize solenoid S5. This occurs before therotation of shaft 11 is complete so that cam lever 82 will be inposition to stop the rotation of said shaft when its single revolutionis complete.

The first movement of cam shaft 56 opens switches e and ,f and closesswitch (1. Switch d is in parallel with the magazine switch a. Thelatter may, therefore, be opened by its cam I88 (Fig. 12)

' at any time thereafter without stopping the operation of motor Mluntil switch d is opened at the end of a complete revolution of camshaft 58.

The opening of switch e prevents solenoid S5 from again being energizeduntil the cam shaft 58 has returned to its'idle position.

The opening of switch 1 prevents a circuit for solenoid S2 beingcompleted when relay R is deenergized. As soon as switch f is opened,cam 2 l3 opens switch k to break the relay holding circuit, permittingswitches r and s to open and switch it to close. Solenoids SI and S4 arethus deenergized but no circuit is completed through switch t.

The rotation of cam shaft 55 continues through the first one-thirdrevolution during which the projector casing 35 is moved into projectingpositlon and the friction wheel I51 is placed against the reel 45 and atthe end of which cam 2l3 closes switch It: with no immediate result andcam 2H closes switches g and h.

The closing of "switch 71. completes a circuit for solenoid S2 to stopthe rotation of the cam shaft 58 (221, t, 235, h, 236, p, 231, S2, 228).This circuit is immediately broken by the opening 0 switch p.

The closing of switch a completes a circuit to light the projector lampLI and exciter lamp L2 (221, g, 238, Ill and L2, 228). This circuitremains complete as long as the cam shaft remains in this position.

The closing of switch g also completes a. circultfor solenoid S3 toengage the projector clutch 64--65 for starting the projection mechanism(221, g, 238. q, 239, S3, 228). This circuit is immediately broken bythe opening of switch q.

At the end of the projection period the contact piece 208 near thefinish point of the film passes between the r01lers-49 and momentarilycloses switch 22 to complete a circuit, for the relay R (221, g, 238,13,232, R, 228). Switch 1' then sets up the relay holding circuit asbefore and switch 3 again completes the circuit for solenoids Si and S4to start the cam shaft 56 and to throw out the projector clutch 64-65and stop the projector mechanism.

Solenoid S4 also permits switch q to close and remake the circuit forsolenoid S3. Since solenoid S4 remains energized, however, theenergizing of solenoid S3 has no effect.

The first movement of cam shaft 56 from its projection position opensswitches g and h. The opening of switch 9 extinguishes the lamps LI andL2 and deenergizes solenoid S3. The opening of switch h prevents theimmediate establishment of a circuit to solenoid S2 when relay R isdeenergized. Immediately after switches g and h are opened, cam 213opens switch k to break the relay holding circuit and deenergizesolenoids SI and S4.

The rotation of cam shaft 56 continues through its second one-thirdrevolution during which the friction wheel i5! is lifted from the reel46 and the friction wheel [69 is lowered to the reel 43. The movement ofpitman I14 closes switch m and completes a circuit to start the rewindmotor M2 (221, d, 229, m, 240, M2, 228).

At about the same time that the rewind motor is started, the cam shaft56 completes its second one-third revolution, cam 2 l 3 closes switch 70with no immediate result and cam 2 l2 closes switches i and 9'.

The closing of switch i has no immediate result.

The closing of switch 7' completes a circuit for solenoid S2 to stop thecam shaft in its rewind position (221, t, 235, 236, p, 231, S2, 226).This circuit is immediately broken by the opening of switch p.

Near the end of the rewinding of the film-the contact piece 200 at thestarting end of the film passes between the rollers 5| and momentarilycloses switch 0 to complete a circuit for the relay R (221, i, 241, c,232, R, 228). The relay switches operate as before to set up the relayholding circuit and to energize solenoid SI to start the cam shaft.

The first movement of the cam shaft from its rewind position opensswitches i and j immediately after which cam 2l3 opens switch k to breakthe relay holding circuit as before. The pitman I14 is raised at thesame time, removing friction wheel I69 from the reel 43 and openingswitch m to stop the rewind motor R2.

At the end of the final one-third revolution of cam shaft 56, cam 2l0closes switches e and f and opens switch d. The closing of switch Icompletes a circuit for solenoid S2 to stop the cam shaft in its initialor idle position (221, t, 235, f, 236, p, 231, S2, 228). This circuit isimmediately broken by the Opening of switch p.

If 'sufiicient coins have not been deposited at this time to continuethe operation of the machine, the magazine switch a is standing open andthe opening of switch d then breaks the circuit to motor MI and stopsthe operation of the machine. The closing of switch e then has noresult. If magazine switch a is closed, however, then the opening ofswitch (1 has no result and the closing of switch e energizes solenoidS5 to initiate another cycle of operations.

When coin control is not desired, it is obvious that the magazine switcha may be replaced by a manually operated snap switch, The machine will,continue to operate, showing films successively or by selection as longas the switch is closed.

The foregoing specification describes the invention in one of itspreferred forms. The details thereof may be varied within wide limitswithout departing from the scope thereof as defined by the appendedclaims. Thus, by omission of the projector lamp and optical system, theinvention may be used to reproduce only the sound recorded upon thesound track of the film and then operates simply as an automaticphonograph. By omission of the exciter lamp and photocell mechanism, theinvention is applicable to silent films. The reference in the claims tothe reproduction of sensible impressions is intended to include eitherthe reproduction of pictures or sound, or both. Similarly, the wordprojector, unless otherwise qualified, includes a device for projectingeither pictures or sound, or both, while the word record" includeseither the sound track or the picture image carried by a film, or both.The word film is also intended to include the usual leader strips ateach end thereof irrespective of thematerial of which they may beformed.

The invention claimed is:

l. The combination of a moving picture projector having film movingmechanism and a projector lamp and optical system movable relatively ofeach other to a film receiving position providing a clear raceway fortransverse movement of a film therebetween and to a projecting positionin which said raceway is closed, a plurality of individual filmscarrying images to be projected thereby, a plurality of reels carryingsaid films, a reel carrying device movable with relation to saidprojector, and power operated means for selectively positioning saidcarrying device to present a portion of a desired film in said racewayin a position free of said film moving mechanism and for thereaftermoving said projector to the projecting position, said film beingengaged with said film moving mechanism in said last mentioned movement.

2. The combination of a projector having film moving mechanism and partsrelatively movable with respect to each other to a film receivingposition providing a clear raceway for transverse movement of a filmtherebetween and to a projecting position in which said raceway isclosed and said film is arranged for reproduction of a record carriedthereby, a plurality of individual films carrying records to bereproduced thereby, a plurality of reels carrying said films, a reelcarrying device movable with relation to said projector, and poweroperated means for selectively positioning said carrying device topresent a portion of a desired film in said raceway in a position freeof said film moving mechanism and for thereafter moving said projectorto the projecting position, said film being engaged with said filmmoving mechanism in said last mentioned movement.

3. The combination with a projector having mechanism for moving filmtherethrough for reproducing records on said film, of a movablecarriage, a plurality of pairs of film reels carried thereby, each ofsaid pairs of reels having a film normally wound on one of the same andextending to the second for winding thereon during reproduction, powerdriven means for moving said carriage, and manual means for selec- 10producing records on said film, of a movable carriage, a plurality ofpairs of film reels carried thereby, each of said pairs of reels havinga film normally wound on one of the same and extending' to the secondfor winding thereon during 15 reproduction, and power operated means forpositioning said carriage to present said films to said projector in apredetermined sequence with the portions thereof extending between saidreels in position to be engaged by said film moving mechanism, but freeof said mechanism. and mechanical means for moving said film thereafterto engagesaid mechanism.

5. The combination with a projector having mechanism for moving filmtherethrough for re- 25 producing records on said film, of a movablecarriage, a plurality of pairs offilm reels carried thereby, each ofsaid' pairs of reels having a film normally wound on one of the same andextending to the second for winding thereon during reproduction, andpower means operating said projector,-carriage and film reels through acycle including: first, the movement of said carriage to present aportion of one of said films in position to be engaged by said filmmoving mech- 35 anism; second, the movement of a portion of saidprojector to so engage said film; third, the operation of said projectorto reproduce the record on said film and the simultaneous rotation ofthe ,second reel of said film for winding the film thereon; fourth, themovement of said projector part to free the film from'said film movingmechanism; and fifth, the rotation of the first reel of said film forrewinding the same thereon. r 6. The combination of a projector havingseparable parts, means for separating said parts to provide a clearraceway for transverse movement of films therebetween, a movablecarriage for a plurality of individual films, 'said films being arrangedto pass trans- '.versely through said raceway in the movement of saidcarriage, means for stopping said carriage with one of said filmspositioned in said raceway, v

and means operable thereafter to move said projector parts to close saidraceway and engage said film for the reproduction of records carriedthereon.

7. The combination of a projector having separable parts, means forseparating said parts -to provide a clear raceway for transversemovement of films therebetween, a movable carriage, a plurality of pairsof film reels carried thereby, each of said pairs of reels having a filmnormally wound on one of the-same and extending 05 to the second forwinding thereon during reproduction, said films being arranged to passthe portions thereof extending between said reels transversely throughsaid raceway in the movement of said carriage, means for stopping said70 carriage with one of said films positioned in said raceway, and meansoperable thereafter to move said projector parts to close said racewayand engage said film for the reproduction of records carried thereon. 175 8. The combination of a projector having sepmove said projector partsto close said raceway transversely through said raceway in the movementof said carriage, means for stopping said carriage with a preselectedfilm positioned in said raceway, and means operable thereafter to andengage said film for the reproduction of records carried thereon.

9. The combination of a projector having parts relatively movable withrespect to each other to a v film receiving position providing a clearraceway for a film therebetween and to a projecting position in whichsaid raceway is closed and said film is arranged for reproduction of arecord carried thereby, a plurality of individual films carrying recordsto be reproduced thereby, a device for storage of said films, a manuallyoperated selector mechanism having means for preselecting a plurality ofsaid films less than the whole number, and automatic means forpositioning a portion of one of the preselected films in said raceway,moving the projector to projecting position, reproducing the recordcarried by said film, returning said projector to film receivingposition, moving said last mentioned film out of said raceway andrepeating the operation with each of said preselected films to theexclusion of those not so selected.

10. The combination of a projector having parts relatively movable withrespect to each other to a film receiving position providing a clearraceway for a film therebetween and to a projecting position in whichsaid-raceway is closed and said film is arranged for reproduction of arecord carried thereby, a plurality of individual films carrying recordsto be reproduced thereby, a device for storage of said films, andautomatic power driven means operating through apredetermined cycle forpositioning a portion of one of said films in said raceway, moving theprojector to projecting position, reproducing the record carried by saidried thereby,- a plurality of individual films carrying records to bereproduced thereby, 'a device for storage of said films, and automaticpower driven means operating through a predetermined cycle forpositioning a portion of one of said films in said raceway, moving theprojector to projecting position, reproducingthe record carried by saidfilm, returning said projector to film receiving position, and thenrewindiiig said film.

' 12. The combination with a. projector having mechanism for moving filmtherethrough for reproducing records on said film, of a movablecarriage, a plurality of pairs of film reels carried thereby, each ofsaid pairs of reels having a film normally wound on one of the same andextending to the second for winding thereon during reproduction, poweroperated means for positioning said carriage to present said films tosaid projector in a predetermined sequence with the portions thereofextending between said reels in position to be engaged by said filmmoving mechanism but free thereof, mechanism automatically operablethereafter to move said film into engagement with said film movingmechanism, means for winding each of said filmswhen so presented fromone of said reels to the other for projection, and means for thereafterrewinding the same.

13. The combination of a moving picture projcctor having film movingmechanism and a projector lamp and optical system movable rela-- tivelyof each other to a film receiving position providing a clear raceway fortransverse movement of a film therebetween and to a projecting positionin which said raceway is closed, a plurality of individual filmscarrying images to be projected thereby, a plurality of reels carryingsaid films, a reel carrying device movable with relation to saidprojector, a manually operated selector mechanism adapted forpreselection of a plurality of films less than the whole number, meansautomatically operating through a predetermined cycle to present theselected films to the exclusion of those not selected in said raceway ina position free of said film moving mechanism and for moving saidprojector to projecting position and projecting said film after eachsuch presentation, said film being engaged with said film movingmechanism in the movement of said projector to projecting position.

14. The combination of a projector having film moving mechanism andparts relatively movable with respect to each other to a film receivingposition providing a clear raceway for transverse movement of a filmthercbetween and to a pro jecting position in which said raceway isclosed and said film is arranged for reproduction of a record carriedthereby, a plurality of individual films carrying images to be projectedthereby, a plurality of reels carrying said films, a reel carryingdevice movable with relation to said projector, a manually operatedselector mechanism adapted for preselection of a plurality of films

